<!DOCTYPE HTML>
<html lang="zh-CN">


<head>
    <meta charset="utf-8">
    <meta name="keywords" content="Spring AOP 详解, Gtwff">
    <meta name="description" content="">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
    <meta name="renderer" content="webkit|ie-stand|ie-comp">
    <meta name="mobile-web-app-capable" content="yes">
    <meta name="format-detection" content="telephone=no">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
    <meta name="referrer" content="no-referrer-when-downgrade">
    <!-- Global site tag (gtag.js) - Google Analytics -->

<script async src="https://www.googletagmanager.com/gtag/js?id="></script>
<script>
    window.dataLayer = window.dataLayer || [];
    function gtag() {
        dataLayer.push(arguments);
    }

    gtag('js', new Date());
    gtag('config', '');
</script>


    <title>Spring AOP 详解 | Gtwff</title>
    <link rel="icon" type="image/png" href="/favicon.png">

    <link rel="stylesheet" type="text/css" href="/libs/awesome/css/all.css">
    <link rel="stylesheet" type="text/css" href="/libs/materialize/materialize.min.css">
    <link rel="stylesheet" type="text/css" href="/libs/aos/aos.css">
    <link rel="stylesheet" type="text/css" href="/libs/animate/animate.min.css">
    <link rel="stylesheet" type="text/css" href="/libs/lightGallery/css/lightgallery.min.css">
    <link rel="stylesheet" type="text/css" href="/css/matery.css">
    <link rel="stylesheet" type="text/css" href="/css/my.css">

    <script src="/libs/jquery/jquery.min.js"></script>

<meta name="generator" content="Hexo 5.4.0"></head>



   <style>
    body{
       background-image: url(https://cdn.jsdelivr.net/gh/Tokisaki-Galaxy/res/site/medias/background.jpg);
       background-repeat:no-repeat;
       background-size:cover;
       background-attachment:fixed;
    }
</style>



<body>
    <header class="navbar-fixed">
    <nav id="headNav" class="bg-color nav-transparent">
        <div id="navContainer" class="nav-wrapper container">
            <div class="brand-logo">
                <a href="/" class="waves-effect waves-light">
                    
                    <img src="/medias/logo.png" class="logo-img" alt="LOGO">
                    
                    <span class="logo-span">Gtwff</span>
                </a>
            </div>
            

<a href="#" data-target="mobile-nav" class="sidenav-trigger button-collapse"><i class="fas fa-bars"></i></a>
<ul class="right nav-menu">
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/" class="waves-effect waves-light">
      
      <i class="fas fa-home" style="zoom: 0.6;"></i>
      
      <span>首页</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/tags" class="waves-effect waves-light">
      
      <i class="fas fa-tags" style="zoom: 0.6;"></i>
      
      <span>标签</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/categories" class="waves-effect waves-light">
      
      <i class="fas fa-bookmark" style="zoom: 0.6;"></i>
      
      <span>分类</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/archives" class="waves-effect waves-light">
      
      <i class="fas fa-archive" style="zoom: 0.6;"></i>
      
      <span>归档</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/about" class="waves-effect waves-light">
      
      <i class="fas fa-user-circle" style="zoom: 0.6;"></i>
      
      <span>关于</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/contact" class="waves-effect waves-light">
      
      <i class="fas fa-comments" style="zoom: 0.6;"></i>
      
      <span>留言板</span>
    </a>
    
  </li>
  
  <li class="hide-on-med-and-down nav-item">
    
    <a href="/friends" class="waves-effect waves-light">
      
      <i class="fas fa-address-book" style="zoom: 0.6;"></i>
      
      <span>友情链接</span>
    </a>
    
  </li>
  
  <li>
    <a href="#searchModal" class="modal-trigger waves-effect waves-light">
      <i id="searchIcon" class="fas fa-search" title="搜索" style="zoom: 0.85;"></i>
    </a>
  </li>
</ul>


<div id="mobile-nav" class="side-nav sidenav">

    <div class="mobile-head bg-color">
        
        <img src="/medias/logo.png" class="logo-img circle responsive-img">
        
        <div class="logo-name">Gtwff</div>
        <div class="logo-desc">
            
            Never really desperate, only the lost of the soul.
            
        </div>
    </div>

    <ul class="menu-list mobile-menu-list">
        
        <li class="m-nav-item">
	  
		<a href="/" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-home"></i>
			
			首页
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/tags" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-tags"></i>
			
			标签
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/categories" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-bookmark"></i>
			
			分类
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/archives" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-archive"></i>
			
			归档
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/about" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-user-circle"></i>
			
			关于
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/contact" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-comments"></i>
			
			留言板
		</a>
          
        </li>
        
        <li class="m-nav-item">
	  
		<a href="/friends" class="waves-effect waves-light">
			
			    <i class="fa-fw fas fa-address-book"></i>
			
			友情链接
		</a>
          
        </li>
        
        
        <li><div class="divider"></div></li>
        <li>
            <a href="https://gitee.com/kuangty/kuangty" class="waves-effect waves-light" target="_blank">
                <i class="fab fa-github-square fa-fw"></i>Fork Me
            </a>
        </li>
        
    </ul>
</div>


        </div>

        
            <style>
    .nav-transparent .github-corner {
        display: none !important;
    }

    .github-corner {
        position: absolute;
        z-index: 10;
        top: 0;
        right: 0;
        border: 0;
        transform: scale(1.1);
    }

    .github-corner svg {
        color: #0f9d58;
        fill: #fff;
        height: 64px;
        width: 64px;
    }

    .github-corner:hover .octo-arm {
        animation: a 0.56s ease-in-out;
    }

    .github-corner .octo-arm {
        animation: none;
    }

    @keyframes a {
        0%,
        to {
            transform: rotate(0);
        }
        20%,
        60% {
            transform: rotate(-25deg);
        }
        40%,
        80% {
            transform: rotate(10deg);
        }
    }
</style>

<a href="https://gitee.com/kuangty/kuangty" class="github-corner tooltipped hide-on-med-and-down" target="_blank"
   data-tooltip="Fork Me" data-position="left" data-delay="50">
    <svg viewBox="0 0 250 250" aria-hidden="true">
        <path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path>
        <path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2"
              fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path>
        <path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z"
              fill="currentColor" class="octo-body"></path>
    </svg>
</a>
        
    </nav>

</header>

    



<div class="bg-cover pd-header post-cover" style="background-image: url('/medias/featureimages/2.jpg')">
    <div class="container" style="right: 0px;left: 0px;">
        <div class="row">
            <div class="col s12 m12 l12">
                <div class="brand">
                    <h1 class="description center-align post-title">Spring AOP 详解</h1>
                </div>
            </div>
        </div>
    </div>
</div>




<main class="post-container content">

    
    <link rel="stylesheet" href="/libs/tocbot/tocbot.css">
<style>
    #articleContent h1::before,
    #articleContent h2::before,
    #articleContent h3::before,
    #articleContent h4::before,
    #articleContent h5::before,
    #articleContent h6::before {
        display: block;
        content: " ";
        height: 100px;
        margin-top: -100px;
        visibility: hidden;
    }

    #articleContent :focus {
        outline: none;
    }

    .toc-fixed {
        position: fixed;
        top: 64px;
    }

    .toc-widget {
        width: 345px;
        padding-left: 20px;
    }

    .toc-widget .toc-title {
        padding: 35px 0 15px 17px;
        font-size: 1.5rem;
        font-weight: bold;
        line-height: 1.5rem;
    }

    .toc-widget ol {
        padding: 0;
        list-style: none;
    }

    #toc-content {
        padding-bottom: 30px;
        overflow: auto;
    }

    #toc-content ol {
        padding-left: 10px;
    }

    #toc-content ol li {
        padding-left: 10px;
    }

    #toc-content .toc-link:hover {
        color: #42b983;
        font-weight: 700;
        text-decoration: underline;
    }

    #toc-content .toc-link::before {
        background-color: transparent;
        max-height: 25px;

        position: absolute;
        right: 23.5vw;
        display: block;
    }

    #toc-content .is-active-link {
        color: #42b983;
    }

    #floating-toc-btn {
        position: fixed;
        right: 15px;
        bottom: 76px;
        padding-top: 15px;
        margin-bottom: 0;
        z-index: 998;
    }

    #floating-toc-btn .btn-floating {
        width: 48px;
        height: 48px;
    }

    #floating-toc-btn .btn-floating i {
        line-height: 48px;
        font-size: 1.4rem;
    }
</style>
<div class="row">
    <div id="main-content" class="col s12 m12 l9">
        <!-- 文章内容详情 -->
<div id="artDetail">
    <div class="card">
        <div class="card-content article-info">
            <div class="row tag-cate">
                <div class="col s7">
                    
                    <div class="article-tag">
                        
                            <a href="/tags/Spring-AOP/">
                                <span class="chip bg-color">Spring AOP</span>
                            </a>
                        
                    </div>
                    
                </div>
                <div class="col s5 right-align">
                    
                    <div class="post-cate">
                        <i class="fas fa-bookmark fa-fw icon-category"></i>
                        
                            <a href="/categories/Spring/" class="post-category">
                                Spring
                            </a>
                        
                    </div>
                    
                </div>
            </div>

            <div class="post-info">
                
                <div class="post-date info-break-policy">
                    <i class="far fa-calendar-minus fa-fw"></i>发布日期:&nbsp;&nbsp;
                    2022-06-04
                </div>
                

                
                <div class="post-date info-break-policy">
                    <i class="far fa-calendar-check fa-fw"></i>更新日期:&nbsp;&nbsp;
                    2022-06-04
                </div>
                

                
                <div class="info-break-policy">
                    <i class="far fa-file-word fa-fw"></i>文章字数:&nbsp;&nbsp;
                    2.9k
                </div>
                

                
                <div class="info-break-policy">
                    <i class="far fa-clock fa-fw"></i>阅读时长:&nbsp;&nbsp;
                    11 分
                </div>
                

                
                    <div id="busuanzi_container_page_pv" class="info-break-policy">
                        <i class="far fa-eye fa-fw"></i>阅读次数:&nbsp;&nbsp;
                        <span id="busuanzi_value_page_pv"></span>
                    </div>
				
            </div>
        </div>
        <hr class="clearfix">

        
        <!-- 是否加载使用自带的 prismjs. -->
        <link rel="stylesheet" href="/libs/prism/prism.css">
        

        
        <!-- 代码块折行 -->
        <style type="text/css">
            code[class*="language-"], pre[class*="language-"] { white-space: pre-wrap !important; }
        </style>
        

        <div class="card-content article-card-content">
            <div id="articleContent">
                <h1 id="🐸-Spring-AOP-详解"><a href="#🐸-Spring-AOP-详解" class="headerlink" title="🐸 Spring AOP 详解"></a>🐸 Spring AOP 详解</h1><hr>
<h2 id="1-什么是-AOP"><a href="#1-什么是-AOP" class="headerlink" title="1. 什么是 AOP"></a>1. 什么是 AOP</h2><p><code>AOP 即 Aspect-Oriented Programming: 面向切面编程</code> 能够 <strong>将那些与业务无关，却为业务模块所共同调用的逻辑或责任（例如事务处理、日志管理、权限控制等）封装起来</strong>，便于<strong>减少系统的重复代码</strong>，<strong>降低模块间的耦合度</strong>，并<strong>有利于未来的可拓展性和可维护性</strong>。</p>
<p>AOP 实现的关键在于 AOP 框架自动创建的 AOP 代理，AOP 代理主要分为静态代理和动态代理：</p>
<ul>
<li>以 <strong>AspectJ</strong> 为代表的静态代理</li>
<li>以 <strong>Spring AOP</strong> 为代表的动态代理</li>
</ul>
<blockquote>
<p>💡 <strong>Spring AOP 属于运行时增强，而 AspectJ 是编译时增强。</strong> Spring AOP 基于代理(Proxying)，而 AspectJ 基于字节码操作(Bytecode Manipulation)。</p>
<p><strong>Spring AOP 已经集成了 AspectJ</strong> ，AspectJ 应该算的上是 Java 生态系统中最完整的 AOP 框架了。AspectJ 相比于 Spring AOP 功能更加强大，但是 Spring AOP 相对来说更简单</p>
<p>如果我们的切面比较少，那么两者性能差异不大。但是，<strong>当切面太多的话，最好选择 AspectJ ，它比 Spring AOP 快很多</strong>。</p>
</blockquote>
<p>⭐ <strong>Spring AOP 是基于动态代理的</strong>，如果要代理的对象，实现了某个接口，那么Spring AOP会使用 <strong>JDK 动态代理机制</strong> 去创建代理对象。而对于没有实现接口的对象，就无法使用 JDK Proxy 去进行代理了，这时候 Spring AOP 会使用 <strong>Cglib 动态代理机制</strong> 生成一个被代理对象的子类来作为代理</p>
<blockquote>
<p>🔗 关于 Java 代理可参见这篇文章 <a target="_blank" rel="noopener" href="https://veal98.gitee.io/cs-wiki/#/Java/Java%E5%9F%BA%E7%A1%80/10-%E4%BB%A3%E7%90%86">CS-Wiki — 👦 静态代理 + JDK/CGLIB/Javassit 动态代理</a></p>
</blockquote>
<p>如下图所示：</p>
<img src="https://cdn.jsdelivr.net/gh/kuangtf/PictureBed/img/image-20220602152500041.png" alt="image-20220602152500041" style="zoom:80%;" />

<p>🚨 <strong>AOP 和 IoC 一样，都不是 Spring 独有的，Spring 只是支持 AOP / IoC 的框架之一</strong></p>
<h2 id="2-AOP-相关术语"><a href="#2-AOP-相关术语" class="headerlink" title="2. AOP 相关术语"></a>2. AOP 相关术语</h2><ul>
<li><p>🔸 <strong>连接点（Joinpoint)</strong> 程序执行的某个特定位置，如某个方法调用前，调用后，方法抛出异常后，这些代码中的特定点称为连接点。<u>简单来说，就是在哪加入你的逻辑增强</u></p>
</li>
<li><p>🔸 <strong>通知（Advice）</strong> 增强是织入到目标类连接点上的一段程序代码。在 Spring 中还可为增强代码指定方位信息：</p>
<ul>
<li><strong>前置通知(before)</strong>:在执行业务代码前做些操作，比如获取连接对象</li>
<li><strong>后置通知(after)</strong>:在执行业务代码后做些操作，无论是否发生异常，它都会执行，比如关闭连接对象</li>
<li><strong>异常通知（afterThrowing）</strong>:在执行业务代码后出现异常，需要做的操作，比如回滚事务</li>
<li><strong>返回通知(afterReturning)</strong>,在执行业务代码后无异常，会执行的操作</li>
<li>**环绕通知(around)**，这个目前跟我们谈论的事务没有对应的操作，所以暂时不谈</li>
</ul>
</li>
<li><p>🔸 <strong>切点/切入点（PointCut）</strong> 就是<u>带有通知的连接点，在程序中主要体现为书写切入点表达式</u></p>
</li>
<li><p>🔸 <strong>目标对象（Target）</strong> 需要被加强的业务对象</p>
</li>
<li><p>🔸 <strong>织入（Weaving）</strong> 织入就是将增强添加到对目标类具体连接点上的过程。</p>
<p>织入是一个形象的说法，具体来说，就是生成代理对象并将切面内容融入到业务流程的过程。</p>
</li>
<li><p>🔸 <strong>代理类（Proxy）</strong> <u>一个类被 AOP 织入增强后，就产生了一个代理类</u>。</p>
</li>
<li><p>🔸 <strong>切面（Aspect）</strong> 切面由切点和增强组成，它既包括了横切逻辑的定义，也包括了连接点的定义，SpringAOP 就是将切面所定义的横切逻辑织入到切面所制定的连接点中。<strong>通常来说切面是一个类（切面类），即对该类的某个方法进行增强</strong></p>
</li>
</ul>
<img src="https://cdn.jsdelivr.net/gh/kuangtf/PictureBed/img/image-20220602152530318.png" alt="image-20220602152530318" style="zoom:80%;" />

<h2 id="4-切入点表达式"><a href="#4-切入点表达式" class="headerlink" title="4. 切入点表达式"></a>4. 切入点表达式</h2><h3 id="①-切入点表达式的作用"><a href="#①-切入点表达式的作用" class="headerlink" title="① 切入点表达式的作用"></a>① 切入点表达式的作用</h3><p>切入点表达式的作用是：指明要对业务层中哪些方法增强</p>
<h3 id="②-切入点表达式的写法"><a href="#②-切入点表达式的写法" class="headerlink" title="② 切入点表达式的写法"></a>② 切入点表达式的写法</h3><p><strong>标准的表达式写法</strong>：访问修饰符 返回值 包名.包名.包名…类名.方法名(参数列表)</p>
 <pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token class-name"><span class="token namespace">com<span class="token punctuation">.</span>smallbeef<span class="token punctuation">.</span>service<span class="token punctuation">.</span>impl<span class="token punctuation">.</span></span>AccountServiceImpl</span><span class="token punctuation">.</span><span class="token function">saveAccount</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>

<p><strong>访问修饰符可以省略</strong></p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">void</span> <span class="token class-name"><span class="token namespace">com<span class="token punctuation">.</span>smallbeef<span class="token punctuation">.</span>service<span class="token punctuation">.</span>impl<span class="token punctuation">.</span></span>AccountServiceImpl</span><span class="token punctuation">.</span><span class="token function">saveAccount</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>

<p><strong>可以使用通配符 <code>*</code>，表示任意或所有</strong>*。</p>
<p>对于参数列表 可以直接写数据类型：</p>
<ul>
<li>基本类型直接写名称，比如 int</li>
<li>引用类型写 <u>包名.类名</u> 的方式   java.lang.String</li>
<li>可以使用通配符表示任意参数类型，但是该方法必须有参数</li>
<li>可以使用 <code>..</code> 表示有无参数均可，有参数可以是任意类型</li>
</ul>
<p><strong>实际开发中切入点表达式的通常写法：切到业务层实现类下的所有方法</strong>：<code>* com.smallbeef.service.impl.*.*(..)</code></p>
<h3 id="③-通用化切入点表达式"><a href="#③-通用化切入点表达式" class="headerlink" title="③ 通用化切入点表达式"></a>③ 通用化切入点表达式</h3><p>配置切入点表达式，方便代码书写</p>
<p><code>id</code> 属性用于指定表达式的唯一标识。<code>expression</code> 属性用于指定表达式内容</p>
<p>此标签写在 <code>aop:aspect</code> 标签 <strong>内部</strong> 只能当前切面使用。</p>
<p>它还可以写在 <code>aop:aspect</code> <strong>外面</strong>，此时就变成了所有切面可用</p>
<p><strong>注：该标签必须写在切面之前</strong></p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token operator">&lt;</span>aop<span class="token operator">:</span>pointcut id<span class="token operator">=</span><span class="token string">"pt1"</span> expression<span class="token operator">=</span><span class="token string">"execution(* com.smallbeef.service.impl.*.*(..))"</span><span class="token operator">></span><span class="token operator">&lt;</span><span class="token operator">/</span>aop<span class="token operator">:</span>pointcut<span class="token operator">></span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>

<p>通过 <code>point-ref</code> 属性引用切入点表达式（通知 + 切入点表达式 = 切入点）</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token operator">&lt;</span>aop<span class="token operator">:</span>before method<span class="token operator">=</span><span class="token string">"beforePrintLog"</span> pointcut<span class="token operator">-</span>ref<span class="token operator">=</span><span class="token string">"pt1"</span> <span class="token operator">></span><span class="token operator">&lt;</span><span class="token operator">/</span>aop<span class="token operator">:</span>before<span class="token operator">></span><span aria-hidden="true" class="line-numbers-rows"><span></span></span></code></pre>

<h2 id="5-五种通知类型"><a href="#5-五种通知类型" class="headerlink" title="5. 五种通知类型"></a>5. 五种通知类型</h2><ul>
<li><strong>前置通知</strong>：在切入点方法执行之前执行</li>
<li><strong>后置通知</strong>：在切入点方法正常执行之后值。它和异常通知永远只能执行一个</li>
<li><strong>异常通知：</strong>在切入点方法执行产生异常之后执行。它和后置通知永远只能执行一个</li>
<li><strong>最终通知</strong>：无论切入点方法是否正常执行它都会在其后执行</li>
<li><strong>环绕通知</strong>：它是 Spring 框架为我们提供的一种可以在代码中手动控制增强方法何时执行的方式</li>
</ul>
<h3 id="①-前置通知"><a href="#①-前置通知" class="headerlink" title="① 前置通知"></a>① 前置通知</h3><pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token comment">&lt;!-- 配置前置通知：在切入点方法beforePrintLog执行之前执行--></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">aop:</span>before</span> <span class="token attr-name">method</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>beforePribeforePrintLogntLog<span class="token punctuation">"</span></span> <span class="token attr-name">pointcut-ref</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>pt1<span class="token punctuation">"</span></span> <span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token namespace">aop:</span>before</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span></span></code></pre>

<h3 id="②-后置通知"><a href="#②-后置通知" class="headerlink" title="② 后置通知"></a>② 后置通知</h3><pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token comment">&lt;!-- 配置最终通知：无论切入点方法afterReturningPrintLog是否正常执行它都会在其后面执行--></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">aop:</span>after-returning</span> <span class="token attr-name">method</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>afterReturningPrintLog<span class="token punctuation">"</span></span> <span class="token attr-name">pointcut-ref</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>pt1<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token namespace">aop:</span>after-returning</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span></span></code></pre>

<h3 id="③-异常通知"><a href="#③-异常通知" class="headerlink" title="③ 异常通知"></a>③ 异常通知</h3><pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"> <span class="token comment">&lt;!-- 配置异常通知：在切入点方法afterThrowingPrintLog执行产生异常之后执行。它和后置通知永远只能执行一个--></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">aop:</span>after-throwing</span> <span class="token attr-name">method</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>afterThrowingPrintLog<span class="token punctuation">"</span></span> <span class="token attr-name">pointcut-ref</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>pt1<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token namespace">aop:</span>after-throwing</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span></span></code></pre>

<h3 id="④-最终通知"><a href="#④-最终通知" class="headerlink" title="④ 最终通知"></a>④ 最终通知</h3><pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token comment">&lt;!-- 配置最终通知：无论切入点方法是否正常执行它都会在其后面执行--></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">aop:</span>after</span> <span class="token attr-name">method</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>afterPrintLog<span class="token punctuation">"</span></span> <span class="token attr-name">pointcut-ref</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>pt1<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token namespace">aop:</span>after</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span></span></code></pre>

<h3 id="⑤-环绕通知"><a href="#⑤-环绕通知" class="headerlink" title="⑤ 环绕通知"></a>⑤ 环绕通知</h3><p>它是 Spring 框架为我们提供的一种可以在代码中手动控制增强方法何时执行的方式</p>
<pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token comment">&lt;!-- 配置环绕通知 --></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">aop:</span>around</span> <span class="token attr-name">method</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>aroundPringLog<span class="token punctuation">"</span></span> <span class="token attr-name">pointcut-ref</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>pt1<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token namespace">aop:</span>around</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span></span></code></pre>

<p>Spring框架为我们提供了一个接口：<code>ProceedingJoinPoint</code>。该接口有一个方法 <code>proceed()</code>，此方法就相当于<strong>明确调用切入点方法。</strong></p>
<p>该接口可以作为环绕通知的方法参数，在程序执行时，Spring 框架会为我们提供该接口的实现类供我们使用。</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token keyword">public</span> <span class="token class-name">Object</span> <span class="token function">aroundPringLog</span><span class="token punctuation">(</span><span class="token class-name">ProceedingJoinPoint</span> pjp<span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
        <span class="token class-name">Object</span> rtValue <span class="token operator">=</span> <span class="token keyword">null</span><span class="token punctuation">;</span>
        <span class="token keyword">try</span><span class="token punctuation">&#123;</span>
            <span class="token class-name">Object</span><span class="token punctuation">[</span><span class="token punctuation">]</span> args <span class="token operator">=</span> pjp<span class="token punctuation">.</span><span class="token function">getArgs</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//得到方法执行所需的参数</span>

            <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"Logger类中的aroundPringLog方法开始记录日志了。。。前置通知"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

            rtValue <span class="token operator">=</span> pjp<span class="token punctuation">.</span><span class="token function">proceed</span><span class="token punctuation">(</span>args<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//明确调用业务层方法（切入点方法）</span>

            <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"Logger类中的aroundPringLog方法开始记录日志了。。。后置通知"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

            <span class="token keyword">return</span> rtValue<span class="token punctuation">;</span>
        <span class="token punctuation">&#125;</span><span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> t<span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
            <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"Logger类中的aroundPringLog方法开始记录日志了。。。异常通知"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
            <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">RuntimeException</span><span class="token punctuation">(</span>t<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">&#125;</span><span class="token keyword">finally</span> <span class="token punctuation">&#123;</span>
            <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"Logger类中的aroundPringLog方法开始记录日志了。。。最终通知"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">&#125;</span>
<span class="token punctuation">&#125;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<p>要增加的方法在 <code>proceed</code> 之前调用就是前置通知，在之后调用就是后置通知，</p>
<p>在异常中调用就是异常通知，在 finally 中调用就是最终通知</p>
<h2 id="6-XML-配置-AOP"><a href="#6-XML-配置-AOP" class="headerlink" title="6. XML 配置 AOP"></a>6. XML 配置 AOP</h2><h3 id="①-导入约束和依赖"><a href="#①-导入约束和依赖" class="headerlink" title="① 导入约束和依赖"></a>① 导入约束和依赖</h3><pre class="line-numbers language-xml" data-language="xml"><code class="language-xml">?xml version="1.0" encoding="UTF-8"?>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>beans</span> <span class="token attr-name">xmlns</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>http://www.springframework.org/schema/beans<span class="token punctuation">"</span></span>
       <span class="token attr-name"><span class="token namespace">xmlns:</span>xsi</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>http://www.w3.org/2001/XMLSchema-instance<span class="token punctuation">"</span></span>
       <span class="token attr-name"><span class="token namespace">xmlns:</span>aop</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>http://www.springframework.org/schema/aop<span class="token punctuation">"</span></span>
       <span class="token attr-name"><span class="token namespace">xsi:</span>schemaLocation</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
  		
  	<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependencies</span><span class="token punctuation">></span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependency</span><span class="token punctuation">></span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">></span></span>org.springframework<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">></span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">></span></span>spring-context<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">></span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>version</span><span class="token punctuation">></span></span>5.0.2.RELEASE<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>version</span><span class="token punctuation">></span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependency</span><span class="token punctuation">></span></span>

        <span class="token comment">&lt;!--负责解析切入点表达式--></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>dependency</span><span class="token punctuation">></span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>groupId</span><span class="token punctuation">></span></span>org.aspectj<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>groupId</span><span class="token punctuation">></span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>artifactId</span><span class="token punctuation">></span></span>aspectjweaver<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>artifactId</span><span class="token punctuation">></span></span>
            <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>version</span><span class="token punctuation">></span></span>1.8.7<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>version</span><span class="token punctuation">></span></span>
        <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependency</span><span class="token punctuation">></span></span>
    <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>dependencies</span><span class="token punctuation">></span></span>
  		
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>beans</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h3 id="②-配置-Spring-的-IoC"><a href="#②-配置-Spring-的-IoC" class="headerlink" title="② 配置 Spring 的 IoC"></a>② 配置 Spring 的 IoC</h3><p>比如：</p>
<pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token comment">&lt;!-- 配置srping的Ioc,把service对象配置进来--></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>bean</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>accountService<span class="token punctuation">"</span></span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>com.smallbeef.service.impl.AccountServiceImpl<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>bean</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span></span></code></pre>

<p>当然也可以用 <code>&lt;component-scan&gt;</code> + <code>@Component</code> 或者纯注解配置 IoC</p>
<h3 id="③-配置-AOP"><a href="#③-配置-AOP" class="headerlink" title="③ 配置 AOP"></a>③ 配置 AOP</h3><ul>
<li><p>使用 <code>aop:config</code> 标签表明开始 AOP 的配置</p>
</li>
<li><p>使用 <code>aop:aspect</code> 标签表明配置切面</p>
<ul>
<li><p>id 属性：是给切面提供一个唯一标识</p>
</li>
<li><p>ref 属性：是指定通知类 bean 的 id。</p>
</li>
</ul>
</li>
<li><p>在 <code>aop:aspect</code> 标签的内部使用对应标签来配置<strong>通知的类型</strong>（四种常用的通知类型 见下文）</p>
<ul>
<li><p>method 属性：用于指定Logger类中哪个方法是前置通知</p>
</li>
<li><p>pointcut 属性：用于指定 <strong>切入点表达式</strong>，即指定对哪些方法进行增强</p>
<p><strong><code>execution</code> + 切入点表达式</strong></p>
</li>
</ul>
</li>
</ul>
<pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token comment">&lt;!--配置AOP--></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">aop:</span>config</span><span class="token punctuation">></span></span>
     <span class="token comment">&lt;!--配置切面 --></span>
     <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">aop:</span>aspect</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>logAdvice<span class="token punctuation">"</span></span> <span class="token attr-name">ref</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>logger<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
         <span class="token comment">&lt;!-- 配置通知的类型，并且建立通知方法和切入点方法的关联--></span>
         <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">aop:</span>pointcut</span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>pt1<span class="token punctuation">"</span></span> <span class="token attr-name">expression</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>execution(* com.smallbeef.service.impl.*.*(..))<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token namespace">aop:</span>pointcut</span><span class="token punctuation">></span></span>
         <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">aop:</span>before</span> <span class="token attr-name">method</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>printLog<span class="token punctuation">"</span></span> <span class="token attr-name">pointcut-ref</span><span class="token attr-value"><span class="token punctuation attr-equals">=</span><span class="token punctuation">"</span>pt1<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token namespace">aop:</span>before</span><span class="token punctuation">></span></span>
     <span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token namespace">aop:</span>aspect</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token namespace">aop:</span>config</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>

<h2 id="7-注解配置-AOP"><a href="#7-注解配置-AOP" class="headerlink" title="7. 注解配置 AOP"></a>7. 注解配置 AOP</h2><p>导入依赖和约束以及 IoC 配置同 xml 配置</p>
<p>首先：如果我们希望使用注解配置 AOP，则需要在 xml 文件中配置 Spring 开启 对注解 AOP 的支持</p>
<pre class="line-numbers language-xml" data-language="xml"><code class="language-xml"><span class="token comment">&lt;!-- 配置spring开启注解AOP的支持 --></span>
<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">aop:</span>aspectj-autoproxy</span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span><span class="token namespace">aop:</span>aspectj-autoproxy</span><span class="token punctuation">></span></span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span></span></code></pre>

<p>当然，上面的这个标签等同于注解 <code>@EnableAspectJAutoProxy</code>，可在配置类中配合 <code>@Configuration</code> + <code>@ComponentScan</code> 使用</p>
<ul>
<li><p><code>@Aspect</code>     表示当前类是一个切面类 = <code>&lt;aop:aspect&gt;</code> 标签</p>
</li>
<li><p><code>@Pointcut</code> 配置切入点表达式</p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token annotation punctuation">@Pointcut</span><span class="token punctuation">(</span><span class="token string">"execution(* com.smallbeef.service.impl.*.*(..))"</span><span class="token punctuation">)</span>
<span class="token keyword">private</span> <span class="token keyword">void</span> <span class="token function">pt1</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span><span class="token punctuation">&#125;</span> <span aria-hidden="true" class="line-numbers-rows"><span></span><span></span></span></code></pre></li>
<li><p><code>@Before(&quot;pt1()&quot;) </code> 前置通知</p>
</li>
<li><p><code>@AfterReturning(&quot;pt1()&quot;)</code> 后置通知</p>
</li>
<li><p><code>@AfterThrowing(&quot;pt1()&quot;)</code> 异常通知</p>
</li>
<li><p><code>@After(&quot;pt1()&quot;)</code> 最终通知</p>
</li>
<li><p><code>@Around(&quot;pt1()&quot;)</code> 环绕通知</p>
</li>
</ul>
<br>

<p><strong>示例:</strong></p>
<pre class="line-numbers language-java" data-language="java"><code class="language-java"><span class="token comment">/**
 * 用于记录日志的工具类，它里面提供了公共的代码
 */</span>
<span class="token annotation punctuation">@Component</span>
<span class="token annotation punctuation">@Aspect</span> <span class="token comment">// 表示当前类是一个切面类</span>
<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">Logger</span> <span class="token punctuation">&#123;</span>
    <span class="token comment">/**
     * 配置切入点表达式
     */</span>
    <span class="token annotation punctuation">@Pointcut</span><span class="token punctuation">(</span><span class="token string">"execution(* com.smallbeef.service.impl.*.*(..))"</span><span class="token punctuation">)</span>
    <span class="token keyword">private</span> <span class="token keyword">void</span> <span class="token function">pt1</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span><span class="token punctuation">&#125;</span>

    <span class="token comment">/**
     * 前置通知
     */</span>
    <span class="token annotation punctuation">@Before</span><span class="token punctuation">(</span><span class="token string">"pt1()"</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span>  <span class="token keyword">void</span> <span class="token function">beforePrintLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
        <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"前置通知Logger类中的beforePrintLog方法开始记录日志了。。。"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">&#125;</span>

    <span class="token comment">/**
     * 后置通知
     */</span>
    <span class="token annotation punctuation">@AfterReturning</span><span class="token punctuation">(</span><span class="token string">"pt1()"</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span>  <span class="token keyword">void</span> <span class="token function">afterReturningPrintLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
        <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"后置通知Logger类中的afterReturningPrintLog方法开始记录日志了。。。"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">&#125;</span>
    <span class="token comment">/**
     * 异常通知
     */</span>
    <span class="token annotation punctuation">@AfterThrowing</span><span class="token punctuation">(</span><span class="token string">"pt1()"</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span>  <span class="token keyword">void</span> <span class="token function">afterThrowingPrintLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
        <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"异常通知Logger类中的afterThrowingPrintLog方法开始记录日志了。。。"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">&#125;</span>

    <span class="token comment">/**
     * 最终通知
     */</span>
    <span class="token annotation punctuation">@After</span><span class="token punctuation">(</span><span class="token string">"pt1()"</span><span class="token punctuation">)</span>
    <span class="token keyword">public</span>  <span class="token keyword">void</span> <span class="token function">afterPrintLog</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
        <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"最终通知Logger类中的afterPrintLog方法开始记录日志了。。。"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">&#125;</span>
    
	<span class="token comment">/**
	* 环绕通知和上面四个不能同时存在
	*/</span>
	<span class="token comment">// @Around("pt1()")</span>
    <span class="token keyword">public</span> <span class="token class-name">Object</span> <span class="token function">aroundPringLog</span><span class="token punctuation">(</span><span class="token class-name">ProceedingJoinPoint</span> pjp<span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
        <span class="token class-name">Object</span> rtValue <span class="token operator">=</span> <span class="token keyword">null</span><span class="token punctuation">;</span>
        <span class="token keyword">try</span><span class="token punctuation">&#123;</span>
            <span class="token class-name">Object</span><span class="token punctuation">[</span><span class="token punctuation">]</span> args <span class="token operator">=</span> pjp<span class="token punctuation">.</span><span class="token function">getArgs</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//得到方法执行所需的参数</span>

            <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"Logger类中的aroundPringLog方法开始记录日志了。。。前置"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

            rtValue <span class="token operator">=</span> pjp<span class="token punctuation">.</span><span class="token function">proceed</span><span class="token punctuation">(</span>args<span class="token punctuation">)</span><span class="token punctuation">;</span><span class="token comment">//明确调用业务层方法（切入点方法）</span>

            <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"Logger类中的aroundPringLog方法开始记录日志了。。。后置"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

            <span class="token keyword">return</span> rtValue<span class="token punctuation">;</span>
        <span class="token punctuation">&#125;</span><span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> t<span class="token punctuation">)</span><span class="token punctuation">&#123;</span>
            <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"Logger类中的aroundPringLog方法开始记录日志了。。。异常"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
            <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">RuntimeException</span><span class="token punctuation">(</span>t<span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">&#125;</span><span class="token keyword">finally</span> <span class="token punctuation">&#123;</span>
            <span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"Logger类中的aroundPringLog方法开始记录日志了。。。最终"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
        <span class="token punctuation">&#125;</span>
    <span class="token punctuation">&#125;</span>
<span class="token punctuation">&#125;</span><span aria-hidden="true" class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre>


                
            </div>
            <hr/>

            

    <div class="reprint" id="reprint-statement">
        
            <div class="reprint__author">
                <span class="reprint-meta" style="font-weight: bold;">
                    <i class="fas fa-user">
                        文章作者:
                    </i>
                </span>
                <span class="reprint-info">
                    <a href="/about" rel="external nofollow noreferrer">Sky</a>
                </span>
            </div>
            <div class="reprint__type">
                <span class="reprint-meta" style="font-weight: bold;">
                    <i class="fas fa-link">
                        文章链接:
                    </i>
                </span>
                <span class="reprint-info">
                    <a href="https://kuangty.gitee.io/2022/06/04/SSM/Spring/AOP%E8%AF%A6%E8%A7%A3/">https://kuangty.gitee.io/2022/06/04/SSM/Spring/AOP%E8%AF%A6%E8%A7%A3/</a>
                </span>
            </div>
            <div class="reprint__notice">
                <span class="reprint-meta" style="font-weight: bold;">
                    <i class="fas fa-copyright">
                        版权声明:
                    </i>
                </span>
                <span class="reprint-info">
                    本博客所有文章除特別声明外，均采用
                    <a href="https://creativecommons.org/licenses/by/4.0/deed.zh" rel="external nofollow noreferrer" target="_blank">CC BY 4.0</a>
                    许可协议。转载请注明来源
                    <a href="/about" target="_blank">Sky</a>
                    !
                </span>
            </div>
        
    </div>

    <script async defer>
      document.addEventListener("copy", function (e) {
        let toastHTML = '<span>复制成功，请遵循本文的转载规则</span><button class="btn-flat toast-action" onclick="navToReprintStatement()" style="font-size: smaller">查看</a>';
        M.toast({html: toastHTML})
      });

      function navToReprintStatement() {
        $("html, body").animate({scrollTop: $("#reprint-statement").offset().top - 80}, 800);
      }
    </script>



            <div class="tag_share" style="display: block;">
                <div class="post-meta__tag-list" style="display: inline-block;">
                    
                        <div class="article-tag">
                            
                                <a href="/tags/Spring-AOP/">
                                    <span class="chip bg-color">Spring AOP</span>
                                </a>
                            
                        </div>
                    
                </div>
                <div class="post_share" style="zoom: 80%; width: fit-content; display: inline-block; float: right; margin: -0.15rem 0;">
                    <link rel="stylesheet" type="text/css" href="/libs/share/css/share.min.css">
<div id="article-share">

    
    <div class="social-share" data-sites="twitter,facebook,google,qq,qzone,wechat,weibo,douban,linkedin" data-wechat-qrcode-helper="<p>微信扫一扫即可分享！</p>"></div>
    <script src="/libs/share/js/social-share.min.js"></script>
    

    

</div>

                </div>
            </div>
            
                <style>
    #reward {
        margin: 40px 0;
        text-align: center;
    }

    #reward .reward-link {
        font-size: 1.4rem;
        line-height: 38px;
    }

    #reward .btn-floating:hover {
        box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2), 0 5px 15px rgba(0, 0, 0, 0.2);
    }

    #rewardModal {
        width: 320px;
        height: 350px;
    }

    #rewardModal .reward-title {
        margin: 15px auto;
        padding-bottom: 5px;
    }

    #rewardModal .modal-content {
        padding: 10px;
    }

    #rewardModal .close {
        position: absolute;
        right: 15px;
        top: 15px;
        color: rgba(0, 0, 0, 0.5);
        font-size: 1.3rem;
        line-height: 20px;
        cursor: pointer;
    }

    #rewardModal .close:hover {
        color: #ef5350;
        transform: scale(1.3);
        -moz-transform:scale(1.3);
        -webkit-transform:scale(1.3);
        -o-transform:scale(1.3);
    }

    #rewardModal .reward-tabs {
        margin: 0 auto;
        width: 210px;
    }

    .reward-tabs .tabs {
        height: 38px;
        margin: 10px auto;
        padding-left: 0;
    }

    .reward-content ul {
        padding-left: 0 !important;
    }

    .reward-tabs .tabs .tab {
        height: 38px;
        line-height: 38px;
    }

    .reward-tabs .tab a {
        color: #fff;
        background-color: #ccc;
    }

    .reward-tabs .tab a:hover {
        background-color: #ccc;
        color: #fff;
    }

    .reward-tabs .wechat-tab .active {
        color: #fff !important;
        background-color: #22AB38 !important;
    }

    .reward-tabs .alipay-tab .active {
        color: #fff !important;
        background-color: #019FE8 !important;
    }

    .reward-tabs .reward-img {
        width: 210px;
        height: 210px;
    }
</style>

<div id="reward">
    <a href="#rewardModal" class="reward-link modal-trigger btn-floating btn-medium waves-effect waves-light red">赏</a>

    <!-- Modal Structure -->
    <div id="rewardModal" class="modal">
        <div class="modal-content">
            <a class="close modal-close"><i class="fas fa-times"></i></a>
            <h4 class="reward-title">你的赏识是我前进的动力</h4>
            <div class="reward-content">
                <div class="reward-tabs">
                    <ul class="tabs row">
                        <li class="tab col s6 alipay-tab waves-effect waves-light"><a href="#alipay">支付宝</a></li>
                        <li class="tab col s6 wechat-tab waves-effect waves-light"><a href="#wechat">微 信</a></li>
                    </ul>
                    <div id="alipay">
                        <img src="/medias/reward/alipay.jpg" class="reward-img" alt="支付宝打赏二维码">
                    </div>
                    <div id="wechat">
                        <img src="/medias/reward/wechat.png" class="reward-img" alt="微信打赏二维码">
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<script>
    $(function () {
        $('.tabs').tabs();
    });
</script>

            
        </div>
    </div>

    

    

    

    

    

    

    

    

    

<article id="prenext-posts" class="prev-next articles">
    <div class="row article-row">
        
        <div class="article col s12 m6" data-aos="fade-up">
            <div class="article-badge left-badge text-color">
                <i class="fas fa-chevron-left"></i>&nbsp;上一篇</div>
            <div class="card">
                <a href="/2022/06/04/SSM/Spring/Spring%E7%AE%80%E4%BB%8B+IoC%E8%AF%A6%E8%A7%A3/">
                    <div class="card-image">
                        
                        
                        <img src="/medias/featureimages/1.jpg" class="responsive-img" alt="Spring 简介 + IoC 详解">
                        
                        <span class="card-title">Spring 简介 + IoC 详解</span>
                    </div>
                </a>
                <div class="card-content article-content">
                    <div class="summary block-with-text">
                        
                            
                        
                    </div>
                    <div class="publish-info">
                        <span class="publish-date">
                            <i class="far fa-clock fa-fw icon-date"></i>2022-06-04
                        </span>
                        <span class="publish-author">
                            
                            <i class="fas fa-bookmark fa-fw icon-category"></i>
                            
                            <a href="/categories/Spring/" class="post-category">
                                    Spring
                                </a>
                            
                            
                        </span>
                    </div>
                </div>
                
                <div class="card-action article-tags">
                    
                    <a href="/tags/Spring-IoC/">
                        <span class="chip bg-color">Spring IoC</span>
                    </a>
                    
                </div>
                
            </div>
        </div>
        
        
        <div class="article col s12 m6" data-aos="fade-up">
            <div class="article-badge right-badge text-color">
                下一篇&nbsp;<i class="fas fa-chevron-right"></i>
            </div>
            <div class="card">
                <a href="/2022/05/25/dubbo/%E9%A1%B9%E7%9B%AE%E6%9E%B6%E6%9E%84%E6%BC%94%E5%8F%98/">
                    <div class="card-image">
                        
                        
                        <img src="/medias/featureimages/21.jpg" class="responsive-img" alt="项目架构演变过程">
                        
                        <span class="card-title">项目架构演变过程</span>
                    </div>
                </a>
                <div class="card-content article-content">
                    <div class="summary block-with-text">
                        
                            
                        
                    </div>
                    <div class="publish-info">
                            <span class="publish-date">
                                <i class="far fa-clock fa-fw icon-date"></i>2022-05-25
                            </span>
                        <span class="publish-author">
                            
                            <i class="fas fa-bookmark fa-fw icon-category"></i>
                            
                            <a href="/categories/Dubbo/" class="post-category">
                                    Dubbo
                                </a>
                            
                            
                        </span>
                    </div>
                </div>
                
                <div class="card-action article-tags">
                    
                    <a href="/tags/%E9%A1%B9%E7%9B%AE%E6%9E%B6%E6%9E%84%E6%BC%94%E5%8F%98%E8%BF%87%E7%A8%8B/">
                        <span class="chip bg-color">项目架构演变过程</span>
                    </a>
                    
                </div>
                
            </div>
        </div>
        
    </div>
</article>

</div>



<!-- 代码块功能依赖 -->
<script type="text/javascript" src="/libs/codeBlock/codeBlockFuction.js"></script>

<!-- 代码语言 -->

<script type="text/javascript" src="/libs/codeBlock/codeLang.js"></script>


<!-- 代码块复制 -->

<script type="text/javascript" src="/libs/codeBlock/codeCopy.js"></script>


<!-- 代码块收缩 -->

<script type="text/javascript" src="/libs/codeBlock/codeShrink.js"></script>


    </div>
    <div id="toc-aside" class="expanded col l3 hide-on-med-and-down">
        <div class="toc-widget card" style="background-color: white;">
            <div class="toc-title"><i class="far fa-list-alt"></i>&nbsp;&nbsp;目录</div>
            <div id="toc-content"></div>
        </div>
    </div>
</div>

<!-- TOC 悬浮按钮. -->

<div id="floating-toc-btn" class="hide-on-med-and-down">
    <a class="btn-floating btn-large bg-color">
        <i class="fas fa-list-ul"></i>
    </a>
</div>


<script src="/libs/tocbot/tocbot.min.js"></script>
<script>
    $(function () {
        tocbot.init({
            tocSelector: '#toc-content',
            contentSelector: '#articleContent',
            headingsOffset: -($(window).height() * 0.4 - 45),
            collapseDepth: Number('0'),
            headingSelector: 'h1, h2, h3, h4'
        });

        // modify the toc link href to support Chinese.
        let i = 0;
        let tocHeading = 'toc-heading-';
        $('#toc-content a').each(function () {
            $(this).attr('href', '#' + tocHeading + (++i));
        });

        // modify the heading title id to support Chinese.
        i = 0;
        $('#articleContent').children('h1, h2, h3, h4').each(function () {
            $(this).attr('id', tocHeading + (++i));
        });

        // Set scroll toc fixed.
        let tocHeight = parseInt($(window).height() * 0.4 - 64);
        let $tocWidget = $('.toc-widget');
        $(window).scroll(function () {
            let scroll = $(window).scrollTop();
            /* add post toc fixed. */
            if (scroll > tocHeight) {
                $tocWidget.addClass('toc-fixed');
            } else {
                $tocWidget.removeClass('toc-fixed');
            }
        });

        
        /* 修复文章卡片 div 的宽度. */
        let fixPostCardWidth = function (srcId, targetId) {
            let srcDiv = $('#' + srcId);
            if (srcDiv.length === 0) {
                return;
            }

            let w = srcDiv.width();
            if (w >= 450) {
                w = w + 21;
            } else if (w >= 350 && w < 450) {
                w = w + 18;
            } else if (w >= 300 && w < 350) {
                w = w + 16;
            } else {
                w = w + 14;
            }
            $('#' + targetId).width(w);
        };

        // 切换TOC目录展开收缩的相关操作.
        const expandedClass = 'expanded';
        let $tocAside = $('#toc-aside');
        let $mainContent = $('#main-content');
        $('#floating-toc-btn .btn-floating').click(function () {
            if ($tocAside.hasClass(expandedClass)) {
                $tocAside.removeClass(expandedClass).hide();
                $mainContent.removeClass('l9');
            } else {
                $tocAside.addClass(expandedClass).show();
                $mainContent.addClass('l9');
            }
            fixPostCardWidth('artDetail', 'prenext-posts');
        });
        
    });
</script>

    

</main>




    <footer class="page-footer bg-color">
    
        <link rel="stylesheet" href="/libs/aplayer/APlayer.min.css">
<style>
    .aplayer .aplayer-lrc p {
        
        display: none;
        
        font-size: 12px;
        font-weight: 700;
        line-height: 16px !important;
    }

    .aplayer .aplayer-lrc p.aplayer-lrc-current {
        
        display: none;
        
        font-size: 15px;
        color: #42b983;
    }

    
    .aplayer.aplayer-fixed.aplayer-narrow .aplayer-body {
        left: -66px !important;
    }

    .aplayer.aplayer-fixed.aplayer-narrow .aplayer-body:hover {
        left: 0px !important;
    }

    
</style>
<div class="">
    
    <div class="row">
        <meting-js class="col l8 offset-l2 m10 offset-m1 s12"
                   server="netease"
                   type="playlist"
                   id="503838841"
                   fixed='true'
                   autoplay='false'
                   theme='#42b983'
                   loop='all'
                   order='random'
                   preload='auto'
                   volume='0.7'
                   list-folded='true'
        >
        </meting-js>
    </div>
</div>

<script src="/libs/aplayer/APlayer.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/meting@2/dist/Meting.min.js"></script>

    

    <div class="container row center-align"
         style="margin-bottom: 15px !important;">
        <div class="col s12 m8 l8 copy-right">
            Copyright&nbsp;&copy;
            
                <span id="year">2019-2022</span>
            
            <span id="year">2019</span>
            <a href="/about" target="_blank">Gtwff</a>
            |&nbsp;Powered by&nbsp;<a href="https://hexo.io/" target="_blank">Hexo</a>
            |&nbsp;Theme&nbsp;<a href="https://github.com/blinkfox/hexo-theme-matery" target="_blank">Matery</a>
            <br>
            
                &nbsp;<i class="fas fa-chart-area"></i>&nbsp;站点总字数:&nbsp;<span
                        class="white-color">577.4k</span>
            
            
            
                
            
            
                <span id="busuanzi_container_site_pv">
                &nbsp;|&nbsp;<i class="far fa-eye"></i>&nbsp;总访问量:&nbsp;
                    <span id="busuanzi_value_site_pv" class="white-color"></span>
            </span>
            
            
                <span id="busuanzi_container_site_uv">
                &nbsp;|&nbsp;<i class="fas fa-users"></i>&nbsp;总访问人数:&nbsp;
                    <span id="busuanzi_value_site_uv" class="white-color"></span>
            </span>
            
            <br>

            <!-- 运行天数提醒. -->
            
                <span id="sitetime"> Loading ...</span>
                <script>
                    var calcSiteTime = function () {
                        var seconds = 1000;
                        var minutes = seconds * 60;
                        var hours = minutes * 60;
                        var days = hours * 24;
                        var years = days * 365;
                        var today = new Date();
                        var startYear = "2019";
                        var startMonth = "6";
                        var startDate = "28";
                        var startHour = "0";
                        var startMinute = "0";
                        var startSecond = "0";
                        var todayYear = today.getFullYear();
                        var todayMonth = today.getMonth() + 1;
                        var todayDate = today.getDate();
                        var todayHour = today.getHours();
                        var todayMinute = today.getMinutes();
                        var todaySecond = today.getSeconds();
                        var t1 = Date.UTC(startYear, startMonth, startDate, startHour, startMinute, startSecond);
                        var t2 = Date.UTC(todayYear, todayMonth, todayDate, todayHour, todayMinute, todaySecond);
                        var diff = t2 - t1;
                        var diffYears = Math.floor(diff / years);
                        var diffDays = Math.floor((diff / days) - diffYears * 365);

                        // 区分是否有年份.
                        var language = 'zh-CN';
                        if (startYear === String(todayYear)) {
                            document.getElementById("year").innerHTML = todayYear;
                            var daysTip = 'This site has been running for ' + diffDays + ' days';
                            if (language === 'zh-CN') {
                                daysTip = '本站已运行 ' + diffDays + ' 天';
                            } else if (language === 'zh-HK') {
                                daysTip = '本站已運行 ' + diffDays + ' 天';
                            }
                            document.getElementById("sitetime").innerHTML = daysTip;
                        } else {
                            document.getElementById("year").innerHTML = startYear + " - " + todayYear;
                            var yearsAndDaysTip = 'This site has been running for ' + diffYears + ' years and '
                                + diffDays + ' days';
                            if (language === 'zh-CN') {
                                yearsAndDaysTip = '本站已运行 ' + diffYears + ' 年 ' + diffDays + ' 天';
                            } else if (language === 'zh-HK') {
                                yearsAndDaysTip = '本站已運行 ' + diffYears + ' 年 ' + diffDays + ' 天';
                            }
                            document.getElementById("sitetime").innerHTML = yearsAndDaysTip;
                        }
                    }

                    calcSiteTime();
                </script>
            
            <br>
            
        </div>
        <div class="col s12 m4 l4 social-link social-statis">
    <a href="https://github.com/kuangtianyu" class="tooltipped" target="_blank" data-tooltip="访问我的GitHub" data-position="top" data-delay="50">
        <i class="fab fa-github"></i>
    </a>



    <a href="mailto:1575235124@qq.com" class="tooltipped" target="_blank" data-tooltip="邮件联系我" data-position="top" data-delay="50">
        <i class="fas fa-envelope-open"></i>
    </a>







    <a href="tencent://AddContact/?fromId=50&fromSubId=1&subcmd=all&uin=1575235124" class="tooltipped" target="_blank" data-tooltip="QQ联系我: 1575235124" data-position="top" data-delay="50">
        <i class="fab fa-qq"></i>
    </a>





    <a href="https://www.zhihu.com/people/kuang-tian-yu-59" class="tooltipped" target="_blank" data-tooltip="关注我的知乎: https://www.zhihu.com/people/kuang-tian-yu-59" data-position="top" data-delay="50">
        <i class="fab fa-zhihu1">知</i>
    </a>



    <a href="/atom.xml" class="tooltipped" target="_blank" data-tooltip="RSS 订阅" data-position="top" data-delay="50">
        <i class="fas fa-rss"></i>
    </a>

</div>
    </div>
</footer>

<div class="progress-bar"></div>


    <!-- 搜索遮罩框 -->
<div id="searchModal" class="modal">
    <div class="modal-content">
        <div class="search-header">
            <span class="title"><i class="fas fa-search"></i>&nbsp;&nbsp;搜索</span>
            <input type="search" id="searchInput" name="s" placeholder="请输入搜索的关键字"
                   class="search-input">
        </div>
        <div id="searchResult"></div>
    </div>
</div>

<script type="text/javascript">
$(function () {
    var searchFunc = function (path, search_id, content_id) {
        'use strict';
        $.ajax({
            url: path,
            dataType: "xml",
            success: function (xmlResponse) {
                // get the contents from search data
                var datas = $("entry", xmlResponse).map(function () {
                    return {
                        title: $("title", this).text(),
                        content: $("content", this).text(),
                        url: $("url", this).text()
                    };
                }).get();
                var $input = document.getElementById(search_id);
                var $resultContent = document.getElementById(content_id);
                $input.addEventListener('input', function () {
                    var str = '<ul class=\"search-result-list\">';
                    var keywords = this.value.trim().toLowerCase().split(/[\s\-]+/);
                    $resultContent.innerHTML = "";
                    if (this.value.trim().length <= 0) {
                        return;
                    }
                    // perform local searching
                    datas.forEach(function (data) {
                        var isMatch = true;
                        var data_title = data.title.trim().toLowerCase();
                        var data_content = data.content.trim().replace(/<[^>]+>/g, "").toLowerCase();
                        var data_url = data.url;
                        data_url = data_url.indexOf('/') === 0 ? data.url : '/' + data_url;
                        var index_title = -1;
                        var index_content = -1;
                        var first_occur = -1;
                        // only match artiles with not empty titles and contents
                        if (data_title !== '' && data_content !== '') {
                            keywords.forEach(function (keyword, i) {
                                index_title = data_title.indexOf(keyword);
                                index_content = data_content.indexOf(keyword);
                                if (index_title < 0 && index_content < 0) {
                                    isMatch = false;
                                } else {
                                    if (index_content < 0) {
                                        index_content = 0;
                                    }
                                    if (i === 0) {
                                        first_occur = index_content;
                                    }
                                }
                            });
                        }
                        // show search results
                        if (isMatch) {
                            str += "<li><a href='" + data_url + "' class='search-result-title'>" + data_title + "</a>";
                            var content = data.content.trim().replace(/<[^>]+>/g, "");
                            if (first_occur >= 0) {
                                // cut out 100 characters
                                var start = first_occur - 20;
                                var end = first_occur + 80;
                                if (start < 0) {
                                    start = 0;
                                }
                                if (start === 0) {
                                    end = 100;
                                }
                                if (end > content.length) {
                                    end = content.length;
                                }
                                var match_content = content.substr(start, end);
                                // highlight all keywords
                                keywords.forEach(function (keyword) {
                                    var regS = new RegExp(keyword, "gi");
                                    match_content = match_content.replace(regS, "<em class=\"search-keyword\">" + keyword + "</em>");
                                });

                                str += "<p class=\"search-result\">" + match_content + "...</p>"
                            }
                            str += "</li>";
                        }
                    });
                    str += "</ul>";
                    $resultContent.innerHTML = str;
                });
            }
        });
    };

    searchFunc('/search.xml', 'searchInput', 'searchResult');
});
</script>

    <!-- 回到顶部按钮 -->
<div id="backTop" class="top-scroll">
    <a class="btn-floating btn-large waves-effect waves-light" href="#!">
        <i class="fas fa-arrow-up"></i>
    </a>
</div>


    <script src="/libs/materialize/materialize.min.js"></script>
    <script src="/libs/masonry/masonry.pkgd.min.js"></script>
    <script src="/libs/aos/aos.js"></script>
    <script src="/libs/scrollprogress/scrollProgress.min.js"></script>
    <script src="/libs/lightGallery/js/lightgallery-all.min.js"></script>
    <script src="/js/matery.js"></script>

    <!-- Baidu Analytics -->

    <!-- Baidu Push -->

<script>
    (function () {
        var bp = document.createElement('script');
        var curProtocol = window.location.protocol.split(':')[0];
        if (curProtocol === 'https') {
            bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
        } else {
            bp.src = 'http://push.zhanzhang.baidu.com/push.js';
        }
        var s = document.getElementsByTagName("script")[0];
        s.parentNode.insertBefore(bp, s);
    })();
</script>

    
    <script src="/libs/others/clicklove.js" async="async"></script>
    
    
    <script async src="/libs/others/busuanzi.pure.mini.js"></script>
    

    

    

    <!--腾讯兔小巢-->
    
    
    <script type="text/javascript" color="0,0,255"
        pointColor="0,0,255" opacity='0.7'
        zIndex="-1" count="99"
        src="/libs/background/canvas-nest.js"></script>
    

    
    
    <script type="text/javascript" size="150" alpha='0.6'
        zIndex="-1" src="/libs/background/ribbon-refresh.min.js" async="async"></script>
    

    
    <script type="text/javascript" src="/libs/background/ribbon-dynamic.js" async="async"></script>
    

    
    <script src="/libs/instantpage/instantpage.js" type="module"></script>
    

</body>

</html>
